<template>
  <div>
      <nav-bar>
          <div slot="left" class="back" @click="backClick">
              <img src="~assets/img/common/back.svg" alt="">
          </div>
          <div slot="center" class="title">
              <div v-for="(item, index) in titles" class="title-item" 
              :class="{active: index === currentIndex}" 
              :key="index"
              @click="titleClick(index)"
              >
                  {{item}}
              </div>
          </div>
        </nav-bar>
  </div>
</template>

<script>
import NavBar from 'components/common/navbar/NavBar'


export default {
    name: "DetailNavBar",
    components: {
        NavBar
    },
    data() {
        return {
            titles: ['商品','参数','评论','推荐'],
            currentIndex: 0
        }
    },
    methods: {
        titleClick(index) {
            this.currentIndex = index
            this.$emit('titleClick', index);
        },
        backClick() {
            this.$router.back()
        }
    }
}
</script>

<style scoped>
.title {
    display: flex;
    font-size: 13px;
}
.title-item {
    flex: 1;
}
.active {
    color: var(--color-high-text);
}
.back img {
    margin-top: 10px;
}
</style>